// MIT License
// 
// Copyright (c) 2018 Cong Feng.
// 
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
// 
// The above copyright notice and this permission notice shall be included in all
// copies or substantial portions of the Software.
// 
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
// SOFTWARE.

#ifndef SIMPLECC_TRANSFORM_TRIVIALCONSTANTFOLDER_H
#define SIMPLECC_TRANSFORM_TRIVIALCONSTANTFOLDER_H
#include "simplecc/Transform/ExpressionTransformer.h"

namespace simplecc {

/// This class performs trivial constant folding on Expr nodes.
class TrivialConstantFolder : ExpressionTransformer<TrivialConstantFolder> {
  friend ExpressionTransformer;
  /// Declare all methods that perform constant folding.
  /// Generate things like ``ExprAST *FoldBinOpExpr(BinOpExpr *E);``.
#define HANDLE_CONST_FOLD(Class) ExprAST *Fold##Class(Class *E);
#include "simplecc/Transform/TrivialConstantFolder.def"
  ExprAST *FoldExprAST(ExprAST *E);
  ExprAST *TransformExpr(ExprAST *E, AST *Parent);

public:
  TrivialConstantFolder() = default;
  using ExpressionTransformer::Transform;
};

} // namespace simplecc
#endif // SIMPLECC_TRANSFORM_TRIVIALCONSTANTFOLDER_H